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微量元素与同位素地球化学反映胶东花岗-绿岩带金矿成矿物质具有多来源,尤其是地幔来源特征。地震波场、磁场与重力场揭示壳-幔结构与耦合机制是成矿系统物质、能量交换、聚集的根本动力学原因。在此基础上,结合构造环境演化史,将其构造成矿动力学模式表述为:太古宙—元古宙绿岩带产生、形成——金的矿源系统雏形;古生代构造环境稳定——金成矿作用间歇;中生代绿岩带强烈活化-改造——构造成岩成矿;新生代构造继承性活动——后期构造破矿作用。其中印支中晚期郯庐断裂带深切上地幔,通过壳-幔相互作用,将含矿流体系统输运到更高层位,蚀变、矿化作用发生。
Trace elements and isotopic geochemistry reflect the source of the ore-forming materials of the Jiaodong granite-greenstone belt gold deposit, especially the mantle source. Seismic wave field, magnetic field and gravitational field reveal that the crust-mantle structure and coupling mechanism are the fundamental dynamic causes of material and energy exchange and accumulation in the metallogenic system. On the basis of this, combined with the evolution of the tectonic environment, the tectonic model of its mineralization is described as follows: Archean-Proterozoic greenstone belt forms the prototype of gold source system; the Paleozoic tectonic environment is stable - gold mineralization Intermittent interaction; Mesozoic greenstone belt strong activation - remodeling - structural diagenetic mineralization; Cenozoic tectonic succession activity - post-tectonic mineralization. In the middle-late Indosinian Tan-Lu fault zone, the upper mantle is deeply buried, and the ore-bearing fluid system is transported to a higher level through the crust-mantle interaction, and alteration and mineralization occur.